992681 has 4 divisors (see below), whose sum is σ = 1051092. Its totient is φ = 934272.

The previous prime is 992659. The next prime is 992689. The reversal of 992681 is 186299.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 502681 + 490000 = 709^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 992681 - 2¹⁸ = 730537 is a prime.

It is a super-2 number, since 2×992681² = 1970831135522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (992689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29180 + ... + 29213.

It is an arithmetic number, because the mean of its divisors is an integer number (262773).

2⁹⁹²⁶⁸¹ is an apocalyptic number.

It is an amenable number.

992681 is a deficient number, since it is larger than the sum of its proper divisors (58411).

992681 is a wasteful number, since it uses less digits than its factorization.

992681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58410.

The product of its digits is 7776, while the sum is 35.

The square root of 992681 is about 996.3337794133. Note that the first 3 decimals coincide. The cubic root of 992681 is about 99.7554357040.

The spelling of 992681 in words is "nine hundred ninety-two thousand, six hundred eighty-one".